Steele, P. R. Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;
Farihi, J., Gänsicke, B. T., Steele, P. R., Girven, J., Burleigh, M. R., Breedt, E., et al. (2012). A trio of metal-rich dust and gas discs found orbiting candidate white dwarfs with K-band excess. Monthly Notices of the Royal Astronomical Society, 421(2), 1635-1643. doi:10.1111/j.1365-2966.2012.20421.x.